The A-Horizon of soil profile is also called the

The B-Horizon of soil profile is also called the

____________ is said to occur when a ration does not provide all the food nutrients in adequate quantities needed by animal.

The feed that is regularly offered to or consumed by the animal is called

Which of the following type of rations will supplies the animal with just the quantity of nutrients that are enough to enable the animal carry on with vital body activities without losing or gaining another substance